Machine for grinding cards



(No Model.) 2 Sheets-Sheet 1.

0. H. POSS.

MAUHINE POR'GRINDING CARDS.

No. 428,082. Patented May 20, 1890.

H E Q WITNESSES INVENTOR,

(No Model. v 2 Shts-Sheet 2.

' 0. H. POSS. MAGHINE FOR GRINDING CARDS.

No. 428,082. Patented May 20, 1890.

UNITED STATES PATENT OFFICE.

CHARLES H. FOSS, OF TEVVSKBURY, MASSACHUSETTS.

MACHINE FOR RI NDING CARDS.

SPECIFICATION forming part'of Letters Patent No. 428,082, dated May 20,1890.

Serial No. 322,457. (No model.)

To all whom it may concern/.-

Be it known that I, CHARLES H. Foss, of Tcwksbury, Middlesex county,State of Massachusetts,'have invented certain new and usefulImprovements in Machines for Grinding Cards, of which the following is aspecification.

My invention has for its object to grind cards, particularly two or morebeveled carding-faces upon one flat; and it consists of a machine havingone or more grinders, each with different grinding-faces correspondingwith the carding-faces to be produced, mounted upon a single axis andarranged and operated in the manner hereinafter described, and asillustrated in the accompanying drawings, wherein- Figure 1 is a sideview of a machine embodying my invention. Fig. 2 is a section on theline 2 2, Fig. 1. Fig. 3 is a detached view, enlarged, of one of thegrinding-wheels; and Fig. L is an end view of one of the cardingflats,its relation to the carding-cylinder being indicated, and the bevel ofthe different carding-faces being somewhat exaggerated.

The main framework A of the machine is provided upon its upper face withways a, upon which is mounted a reciprocating bed or table B. Lengthwiseupon this bed or table is supported the fiat P, the carding face orfaces of which are to be ground, it being preferably supported at itsopposite ends upon springs D D, which press it upward and hold itagainst the cross-pieces (Z, which extend between the posts or uprightsb of the reciprocating bed. The bed has imparted to it a reciprocatorymotion in any desired manneras,'for instance, by the mangle rack andpinion 0 and shaft N. The shaft N may receive its motion from anysuitable source. As shown, the main power-shaft Q is connected bybevel-gearing q with a shaft R, provided at its end with the belt-pulley1", which is c011- nected by the belt T with the belt-pulley 5 upon theend of the shaft S, which is connected by the bevel-gearin g n with theshaft N.

The grinders C Otwo being by preference employed-are mounted upon shaftsE, inclined to the path of the reciprocating bed and above the flat. Theshafts of the grind ers are mounted in sleeves or elongated bearwhich inturn are mounted in tubular bearings fof a rocking frame G. The stems Fmay be turned in the bearings f, so as to adjust the inclination of theaxes of the grinders to the path of the bed 15, and then held in theiradjusted positions by the set-screws g.

The shafts E are provided with the bandpulleys U, around which passesthe band to, which is driven from the band-wheel V on the main shaft Q,and in its course passes the tightener-wheel 1!, which is adj ustablymounted in a slot in a standard of the main frame. The course of theband a is such that the wheels U and the grinders are caused to turn inopposite directions.

The frame G, in which the grinders are mounted, is upon afulcrum-pin orsupport H, carried by a standard h of the main framework of the machine.The frame G is free to rock upon its support H to a limited extent, theamount of its rocking motion being limited by the adjustable stops L L,between which an arm 00 of the frame extends. The relation of the frameG and grinders to the carding-face of the fiat is such that when theframe is rocked to its extreme position in one direction one of thegrinders is brought into grinder position and the other is carried out.of working relation, and when the frame is rocked to its other extremeposition the relation of the grinders is reversed. When the bed moves inthe direction of the arrow, Fig. 1, the grinder (marked 1) is in contactwith and grinding the card-teeth, and when the bed moves in the oppositedirection the other grinder (marked 2) is brought into grinding positionby shifting the frame G, the two grinders being rotated in thedirections indicated by the arrows marked thereon.

As stated hereinbefore, the two axes of the grinders are arranged atangles to the line of travel of the bed. They are likewise arranged atan angle to each other as well, the reason for this arrangement being tocause the cardteeth to be ground to diamond-points.

The tipping of the frame is done automatically at the end of eachreciprocation of the bed 13 by the dogs I, carried by the bed, and whichengage with acontactpiece J, adj ustably mounted in a slotted arm a ofthe frame ings e, which are provided with stems F,

G. A spring K bears against this contactpiece and holds the frame in theposition to which it has been thrown by the dog I until it is forciblymoved intoits other position,the engaging-faces of the pieee J and thespring K being angular, so as to insure the frame being held in one orthe other of its extreme positions.

In order that I may grind the carding-face of the fiat so as to have twoor more beveled faces, as indicated in Fig. at, in a somewhatexaggerated manner, I make the grinder with a number of distinctgrinding-faces corresponding in number with the number of carding-facesthe flat is desired to have. These grinding-faces are in shape frustumsof cones, preferably of different sizes, the smallest at one end of theseries and the largest at the other.

As shown in the drawings, the grinder is arranged with three inclinedgrinding-faces c c 0 mounted side by side upon the shaft E and formed ofone or of separate pieces of metal, as found most desirable.

The relation of a flat, ground by a grinder such as shown in Fig. 3, t0the carding-cylinder, is shown in Fig. 4, from which it will be seenthat the carding-teeth on the flat are arranged in three sets orcarding-faces, each succeeding set or face being nearer to the cylinderthan the one before it, and that the teeth of each set or face inclinetoward the cylinder in the direction of movement of the latter.

Having described my improvements and the best way now known to me ofcarrying the same into effect, I would state in conclusion thatmanifestly many modifications and changes can be made in the details ofco11- struction of the various parts of the machine without departurefrom the principle of my invention. I do not, therefore, restrict myselfto the particular details of construction herei nbefore set forth inillustration of my improvements; but

\Vhat I claim herein as new and of my own invention is as follows:

1. A rotating grinder for cards, having a plurality of separateperipheral grinding-faces in the shape of frustums of cones arrangedbase to point upon a common axis, substantially as hereinbeforc setforth.

2. In a machine for grinding card-flats, the combination of areciprocating bed, the grinders, the springs D, upon which the flat isplaced, and the crosspieces, against which the flat is held by thesprings, substantially as described.

3. In a card-grinding machine, the combi nation, with the reciprocatingbed, of the two grinders, means for rotating the same, and a movablesupport for said grinders, whereby when the one grinder is brought intoworking position the other will be moved out of working position, andvice versa, substantially as set forth.

4. In a card-grinding machine, the combination, with the reciprocatingbed, of two rotating grinders mounted upon axes inclined to the path oftravel of the bed and inclined to each other, and means for bringingeach grinder alternately into working position over the bed,substantially as set forth.

5. The combination of the reciprocating be 5!, the two grinders,arockingframe in which the grinders are mounted, and means for rocking the frameto bring the grinders alternate- 1y into working position, substantiallyas described.

6. The combination of the reciprocating bed, the two rotating grinders,the rocking frame in which the grinders are mounted, and thecontact-pieces on the bed and the rockin g frame, whereby the latter isrocked as the former is reciprocated, substantially as described.

7. The combination of the reciprocating bed, the two rotating grinders,the rocking frame in which the grinders are mounted, provided with thecontact-piece .I and the arm .112, the adjustable stops L, the dogs I onthe carriage for engaging the piece J to rock the frame, and the springK, adapted to bear upon the piece J and hold the frame in its rockedposition, substantially as described.

8. The combination of the reciprocating bed, a grinder mounted on arevolving shaft, a sleeve-bearing c for the shaft, provided with a stemF, and a frame having a tubularbearing in which the said stem isadjustably held, whereby the angle of the shaft of the grinder to thepath of the bed may be varied, substantially as described.

In testimony whereof I allix my signature in presence of two witnesses.

CHAS. II. FOSS.

itnesses:

A. L. WRIGHT, EFFIE E. Coon.

